Condenser.



No. 820,363. PATBNTED MAY 8; 1 906. W. W. MASSIE.

CONDENSER. APPLICATION FILED 14113.2, 1905.

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UNITED STATES PATENT oF IoE.

WALTER W. MASSIE," OF PROV1DENCE,-RHODE ISLAND.

' CONDENSER.

Specification of Letters Patent.

Patented May 8, 1906.

Application filed March 2, 1906. Serial No. 248,182.

To aZZ whom, it may concern:

Be it known that I, WALTER W. MASSIE, a citlzen of the United States, residing at .Providence, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in Condensers, of which the following is a specification.

This invention relates to condensers.

I do not limit the use of the condenser to any particular field, but have found it of eculiar utility in conjunction with a wire ess tele raphic system.

T e condenser, hereinafter described, in-' volves one or more glass plates upon the pconducting mediums cannot be oxidized, and

therefore their life is prolonged. I also provide for the firm solid en agement between the contacts and the tinoil sheets and an adjustable engagement, so as to' bring the contacts against difierent portions of the tindischarge,

foil sheets. I also prevent brush-discharge. In the resentinstance I attach to op oslte sides 0 a glass plate or equivalent die ectric tin-foil sheets in such a way that there will be a margin around the sheets. These'margins I coat or paint with asphaltum varnish, which I find plactically eliminates brushwhic is very important, in that I I am enabled to secure sharp and accurate tuning effects when the condenser is used in connection with a wireless telegraphic system.

I consider within the scope of m invention substances of a nature e uiva cut to ashaltum varnish, whereby t e eliminationof rush-discharge-is assure In the drawings accompanying and forming a part of this specification I have selected for illustration a smipleform of embodiment, including inventlon, whichI will set forth in detail in the following description. I do not, however, limit myself to the disclosure thus made, for material variations may be ado ted-within the Scope of my claims.

The condenser represented is particularly arranged for mountin upon a Wall. Its glass plates and the tinoil sheets u on opposite surfaces thereof can be place within a crate or box, should occasion require, these beidlg matters of simple detail and immateria In said drawings, Figure 1 is a front view of a condenser includin my invention. Fig. 2 is a side elevation 0 said condenser, and Fig. 3 is a top plan view of the same.

, Like characters refer to like parts throughout the several figures of the drawin s.

In Fig. 1 I have shown two baserackets (each denoted by 2) and which may besecured in any desired way to a wall or other structure. These base-brackets are se arated apart a suitabledistance and rigi ly support blocks (each designated by 3) of some suitable nonconducting material. Two side brackets are shown at 2 and as ri-gidly carrying blocks, as 3 The upper faces of the base-blocks 3 and the side faces of the side blocks 3 are notched or slotted to receive the glass plates 4:; The several blocks space the glass plates apart at the roper intervals, while the base ones uphold t e plates.

Any number of glass plates 4 may be provided, and, as a matter of fact, the invention contemplates the use of but one. To the opposite faces of the glass plates 4 I attach permanently in some suitable waysayb cementtin-foil sheets, (each designated by 5.) The superficial area of the tin-foil sheets is less than that ofthe glass plates, and the parts are so united that there will be a marginal portion about'each tin-foil sheet, as clearly represented in Fi 1. 1 apply to this marginal portion asp altum varnish. The exposed surface of the glass is thoroughly covered. The plate, with the asphaltum-varnish-coated surface, will not absorb moisture,

by reason of which brush-discharge is alstruction, so that they can,be maintained solidly against the outer or ex osed surfaces of the tin-foil sheet. I ordinarlly make them of thin spring-brass. By the use of contacts of the kind set forth I avoid oxidation, which causes sparking and the burning up of the I am enabled by the use of the contacts, therefore, to prolong materially the life of the condenser. .The contacts are shown as carried by bodies, (each designated by 7.) The bodies may be ofany desirable form.

They are represented as consisting of rods having enlar ements at their outer ends to prevent brush-discharge or leakage thereat. These enlar ements are shown as knobs or spheres, eac being designated by 7. The .yieldable or spring contacts 6 are, it will be understood, located at the inner ends of the rods 7. The intermediate contacts, or those which do not bear against the outer faces of the outermost plates, constitute the branches or arms of forks at the inner ends of the cooperating rods 7. The several rods 7 have a longitudinal motion through binding posts or screws, (each designated by 8,) rigidly associated with metallic strips, as 9, fastened to the upper sides of the two side brackets 3. By reason of the longitudinal movement of the rods 7 they can be moved inward or outward. to bring the contacts 6, carried thereby, against diflerent parts of the tin-foil sheets that is to say, I provide for the adjustment of sald contacts. The rods 7 also have a movement sufhcient to carry the contacts 6 out of engagement with the cooperating tin-foil sheets, so that by manipulating one or more of the rods to carry their contacts away from the cooperating tinfoil sheets the capacity of the condenser can be lowered. In other words, I provide for a variation in capacity of the condenser. In addition to the bindmg-posts 8 upon the conducting-strips 9 each of tie latter also carries a post, as 10, to which wires or other conductors maybe connected.

- The device, as will be obvious, is of simple construction, it can be inexpensively made, its components can be readily assembled, and when in such relation brushdischar e is pre= vented or reduced to the least possib eextent. I am enabled to secure desirable effects, as hereinbefore stated, in the art of wireless telegraphy. Other advanta es of the condenser are manifest and wil be obvious to those skilled in the art.

It willbe evident that the condenser involves a plurality of glass plates, to the opposite faces of which are attached tin-foilsheets. I

Means are provided for carryin these plates and maintaining them in parallelism. The plate-carrying means also support the rods, pi'ovided at their inner ends with contacts.

y condenser involves tin-foil sheets and a suitable dielectric therefor, both dry, by which I mean that the said sheets and their dielectric are not immersed in a solution of any kind.

Having thus fully described my invention, what I claim is- 1. A condenser comprising glass plates arranged side by side and provided with tinfoil sheets upon opposite sides thereof, and two setsof rods provided with contacts, the

rods being adjustable'to carry the contacts into and out of engagement with the tin-foil sheets. I

2. A condenser comprising glass plates arranged side by side and provlded with tin foil sheets upon 0 posite faces thereof, two sets of rods provi ed with contacts, and conducting-strips for adjustabl supporting the two sets of rods to permit t e contacts to be moved into and out of engagement with the cooperating tin-foil sheets.

3. A condenser comprising base and side branches, lass plates arranged side by side and rovi ed with tin-foil sheets upon. opposite aces thereof, said plates being held in operative positions by the base and side brackets, conducting-strips supported by the side brackets, and rods longitudinally adjustably sup orted by the conducting-strips and rovide with contacts to engage the tinfoils eets.

4. A condenser involvin a plurality of glass plates having tin-foil sl ieets upon opposite faoes thereof, and suitably-mounted rods, some arranged between the plates and others outside of the plates, the intermediate rods havin bifurcated resilient portions, the branc es of which bear a ainst the intermediate tin-foil sheets, an the outer rods having single resilient portions to bear against the outer tin-foil sheets.

5. A condenser involvin a plurality of glass plates having tin-foil s eets upon op 0- site faces thereof, rods, some arranged etween the platesand others outside of the plates, the intermediate rods having bifurcated resilient portions, the branches of which bear a ainst the intermediate tin-foil sheets, and tl ae outer rods having single resilient portions to bear against the outer tinfoil sheets, and carrying means for sup orting and maintaining in parallelism the p ates, also adapted to carry said rods.

6. A condenser involving a plurality of glass plates arranged in parallelism and havmg tin-foil sheets upon op osite faces thereof, suitably-mounted notched base and side blocks of insulating material, the notches in which receive the plates, binding-posts upon the side blocks, and rods adjustably related with the bindingosts, having enlargements at their outer en s and resilient portions at their inner ends to engage against the tinfoil sheets.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

WALTER W. MASSIE.

Witnesses:

JOHN G. MASSIE, FRANKLIN D. Form. 

